添加下拉刷新的框架，以及更改ActionBar的一些样式
Merge branch 'master' of https://github.com/markwu24/CreativeApp.git

Conflicts:
	CreativeApp/res/values/dimens.xml
	CreativeApp/src/com/creative/ui/activity/HomeActivity.java
	CreativeApp/src/com/creative/ui/fragment/homepage/NavigationDrawerFragment.java